package domain; import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException; public class md5 { public static void main(String args[]) {
Md5("于洋");
} private static void Md5(String plainText) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
byte b[] = md.digest(); int i; StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
} System.out.println("32： " + buf.toString());// 32位的加密 System.out.println("16: " + buf.toString().substring(8, 24));// 16位的加密 } catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}